Pump jack



P. E. TABOR ET AL war JACK Filed lay 14. 1923 mmllIHHIIHI:HllllllHImHIHM 7 JNVENTORS By IaylaKKu-kpatrwr A TTORNE Y.

PATRICK TABOR, OF JOJPLIIZI,.AND

VOYLE V. KIRKPATRICK, Oi? JACKSON COUNTY, MISEOURI.

Polar anon.

Application filed May 14, 1923. Serial No. 639,000.

To all whom it may concern:

Be it known that we, Pa'rnron E. TABOR and Voi'nn V. KIRKPATRICK, bothcitizens of the United @tates, said TAnon being a resident of Joplin inthe county of Jasper and State of Missouri. and said KIRKPATRICK being aresident of the county of Jackson and Fitate of lviissouri. have jointlyinvented new and useful Improvements in Pump .lacks, of which thefollowing is a specification. i

This invention relates to pump heads, and has for one of its objects tosimplify and in'ipiove the construction and increase the c'lliciency andutility of devices of this character.

l l ith these and other objects in view the invention consists ofcertain novel features of construction as hereinafter shown anddescribed and then specifically pointed out in the claims, and in thedrawings illustrative of the preferred embodiment of the invention.

Figure 1 is a side elevation.

Fig. 2 is a front elevation.

big. 3 is a vertical section on the line 3-3 of Fig. 2.

Fig. 41: is a section on the line -.i-.4i of Fig. 1.

The improved apparatus comprises a base portion 10 mounted on a suitablefoundation 11. a supporting frame comprising upright standards 12arranged in pairs and in spaced relation, each pair of standards be-111g connected at their upper ends by inclined head members 13 andintermediate thereof by web members 14;, and the web members connectedby a transverse strut or brace 15. The base member 10 is rigidlyconnected to the foundation 11 as by stay bolts 16.

Mounted for rotation in bearings 13' in the inclined upper parts 13 ofthe frame, is a crank shaft cranks l8 and 19 externally of the framemembers 13 and extending in the same direction, and an intermediatecrank 20 midway between the spaced frame members;

lltountcd for oscillation in the spaced frame i'neinbers at theirhighest point is a pivot shaft 21 and mounted on the ends of the pivotshaft externally of the frame 1nembers are rocker arms 22 and23, while alike rocker arm is mounted upon the same pivot shaft intermediate theframe members. The rocker arms 22 and 23 are coupled havin three crankstwo outer respectively with the cranks 18 and 19 by connecting rods 25and 26, while the intermediate rocker arm 2% is coupled to theintermediate crank 25) by a connecting rod 27. Mounted on the crankshaft externally of the frame members 12 are gear wheels 28. and 2-9..and n'iounted through the frame members 12 near their rear sides is amain drive shaft 30 carrying pinions 31 and 32 engaging the gears 28 and29. By this means the crank shaft will be actuated from the drive shaftthrough the pinions and gears, and the outer rocker arm vibrated inunison and the intermediate rocker arm vibrated alternately with theouter rocker arms. The outc ranks 18 are preferably provided with intoal counter weights 33 and 3% as shown.

Attached at 35 to the base 10 is a combined guide nieinliier and support36 having a rigid sleeve 3'? forn'iing the base portion of a pack ingdevice including a gland 38 the members and providing liquid tightguiding means for a tubular operating member, a portion of which isshown at 39.

At its outer end the member 36 is formed with a threaded step 4+0 toreceive the lower end of a vertica guide rod ii-.1. Attached at 42 and4.3 to the inclined portions 13 of the frame sides arebracket devices44. and 45, the latter coupled at their outer upper ends by a transversetie member 413. The upper end 451 of the guide rod is connected to thetie inemberel-G as by a U-bolt 45?, as shown.

filidable on the guide rod 4-1 is a bracket t? held in position by a cap48., the bracket having lateral trunnions l9. and a downwardly directedsocket to receive and support the upper end of a pump r0d50 whichextends down through the tubular pump rod -39, as shown. The trunnions49 constitute lower pivots to links 51 and 52 which are pivoted at theirupper ends at 53 to the adjacent end of the rocker arm 24. By thisarrangement the upward and downward movement of the rocker arm 24. willcome spondly move the pump rod 50.

Mounted to slide on the rod 41 is another bracket represented as Wholeat 54: and held in movable position on the rod by a cap member 55, thebracket having a rela tively large vertical aperture to receive apacking sleeve 56 in which the upper end of the tubular member 39 issecured as by threading, as shown in Fig. 3. The rod operates throughthe sleeve 56, water tight. by a packing: gland ST.

The sleeve 56 is provided with trunnions 57 operating in half bearingsin the bracket to provide for; a certain degree of rocking motionlzietween the parts 5% and 56. to preventcramping during; the movements.

Extendingla erally from the bracket 5 1: are arms the arms having studs60 and 61 respectirel it their outer ends. it connectingrod 62- ismounted to swing at its lower end on the stud (i0. and pivoted at theupper end at (32) to the rocker arm 22. while a similar connecting rod1? I is mounted to swing at its lower end on the stud (l and pivoted atits upper end at 5 to the rocker arm :23.

The tubular member 39 are adapted to be coupled to a pumping element,not shown. and when motion is applied to the drive. shaft 4 0. the.rocker arms 24; will be Sl iltiliflJitiiIiFlj, vibra ed to apply mot-ionto the tubular pump rod. while the single rocker arm will apply motionto the single pump rod 50. and in alternation with the tubular pump rod.Thus two separate and independent motions will be alternately impartedto the rods to produce a continuous flow from the pumps to which therods are attached.

The improved device is simple in construction, can be imuuifactured ofany suitable material and of any required size and capacity.

The preferred eml'iodin'ient of the invention is disclosed in thedrawings and set forth in the specification. but it will he understoodthat modifications within the scope of the claims may be made in theconstruction without departing from the principle of the invention orsacrificing any of its advantages.

Having thus described the invention, what is claimed as new is 1. In anapparatus of the class described. a supporting frame including spacedside members. a shaft journalled on said frame and the rod 50.

and formed with an intermediate crank disposed between the side meiniwrsof the same and (o-acting crank elements externally of the frai ijieside nieml'iers. an inner beam member mounted for oscillation betweenthe frame side members. a connecting' member between the intermediatecrank and the inner beam member. co-actinp; outer beam mei'i'ibersmounted for oscillation on the frame mem bers externally thereof.onneetin: neinhers respectively between tl en; elements and the outerbeam members. cone? in; pump rods. connecting means between the intermediate beam member and one of said pump rods. and conn(,vd'in l meanslietween the external beam members and the other of said pump rods.

2. In an apparatus of the class described, a supporting frame including)st iced side meniibers. a shaft journalled on said frame and formed withan intermediate crank d.i.,.- posed. between the side members of thesame and co-actingr crank elements externally of the fran'ie sidemen'ihers. an inner beam mem ber mounted for oscillation between theframe side meml'iers. a connecting: n ieu'iber between the intermediatecrank and the inner beam member, co-actingr outer beam members mountedfor oscillation on the frame members externally thereof. connecting;members respectively between the external crank elements and the outerbeam members. co-actin pump rods, :1 guide rod supported by said frame.a cross head element slidable on said guide rod and coupled to one ofsaid pump rods. a bracket device slidable on said guide rod and coupledto the other pump ro l. connecting means between the intermediate beammember and said bracket device. and connecting; means between theexternal beam members and the cross head element.

Tn testimony whereof. we atiix our signatures hereto.

PATRICK E. TABOR. VOYLE V. KIRKPATRICK.

